-- print("ddd")


-- require "ch2.1"
-- effect()
-- require "ch2.2"
-- require "ch2.3"
-- require "ch2.4"
-- require "ch2.6"
-- require "ch2.7"
-- require "ch2.8"

-- require "ch7.1"
-- require "ch7.2"
-- require "ch7.3"


-- require "ch8.1"
-- require "ch8.2"
-- require "ch8.3"
-- require "ch8.5"
-- require "ch8.6"

-- print(string.match("onClick","^on"))
-- print(string.match("ddClick","^on"))

-- print(string.sub("onClick",3))

-- require "ch8.7"
require "ch8.9"






